<template>
  <div class="upload-container">
    <el-button :style="{background:color,borderColor:color}" icon="el-icon-upload" size="mini" type="primary" @click=" dialogVisible=true">
      上传图片
    </el-button>
    <el-dialog :visible.sync="dialogVisible" append-to-body>
      <el-upload
        :action="action"
        :headers="formHeader"
        :multiple="true"
        :data="formData"
        name="img"
        :show-file-list="true"
        :file-list="fileList"
        :on-remove="handleRemove"
        :on-success="handleSuccess"
        :before-upload="beforeUpload"
        class="editor-slide-upload"
        list-type="picture-card"
      >
        <el-button size="small" type="primary">点击上传</el-button>
      </el-upload>
      <el-button @click="dialogVisible = false">取消</el-button>
      <el-button type="primary" @click="handleSubmit">确认</el-button>
    </el-dialog>
  </div>
</template>

<script>
// import { getToken } from 'api/qiniu'
import { getToken } from '@/utils/token'
import md5 from 'js-md5'
import { endecrypt } from '@/utils/aes_endecrypt'

export default {
  name: 'EditorSlideUpload',
  props: {
    color: {
      type: String,
    //default: '#1890ff'
     default: '#409EFF'
    }
  },
  data() {
    return {
      dialogVisible: false,
      listObj: {},
      fileList: [],
      formHeader: {
      	token : getToken(),
      	apiKey: process.env.VUE_APP_BASE_API_KEY,
      },
      formData: {
      	dir_type: 'editor',
      },
			action: process.env.VUE_APP_BASE_API + "common.upload/image_one.html",
    }
  },
  methods: {
    checkAllSuccess() {
      return Object.keys(this.listObj).every(item => this.listObj[item].hasSuccess)
    },
    handleSubmit() {
      const arr = Object.keys(this.listObj).map(v => this.listObj[v])
      if (!this.checkAllSuccess()) {
        this.$message('请等待所有图像成功上载。如果出现网络问题，请刷新页面并重新上传！')
        return
      }
      this.$emit('successCBK', arr)
      this.listObj = {}
      this.fileList = []
      this.dialogVisible = false
    },
    handleSuccess(response, file) {
      //解密
      if(typeof(response.datas) == 'string'){
        response.datas = endecrypt(response.datas, true)
      }
      //判断返回
      if (response.code == 200) {
        const uid = file.uid
        const objKeyArr = Object.keys(this.listObj)
        for (let i = 0, len = objKeyArr.length; i < len; i++) {
          if (this.listObj[objKeyArr[i]].uid === uid) {
            this.listObj[objKeyArr[i]].url = response.datas.img_root + response.datas.file_name
            this.listObj[objKeyArr[i]].hasSuccess = true
            return
          }
        }
      }else{
      	this.$message(response.datas.error);
      	return
      }
    },
    handleRemove(file) {
      const uid = file.uid
      const objKeyArr = Object.keys(this.listObj)
      for (let i = 0, len = objKeyArr.length; i < len; i++) {
        if (this.listObj[objKeyArr[i]].uid === uid) {
          delete this.listObj[objKeyArr[i]]
          return
        }
      }
    },
    beforeUpload(file) {
      //formHeader 参数
      //请求时间戳
      let timeStamp = Math.round(new Date() /1000)
      this.formHeader.timeStamp = timeStamp
      this.formHeader.sign = md5(process.env.VUE_APP_BASE_API_KEY+process.env.VUE_APP_BASE_API_SECRET+timeStamp).toUpperCase()

      const _self = this
      const _URL = window.URL || window.webkitURL
      const fileName = file.uid
      this.listObj[fileName] = {}
      return new Promise((resolve, reject) => {
        const img = new Image()
        img.src = _URL.createObjectURL(file)
        img.onload = function() {
          _self.listObj[fileName] = { hasSuccess: false, uid: file.uid, width: this.width, height: this.height }
        }
        resolve(true)
      })
    }
  }
}
</script>

<style lang="scss" scoped>
.editor-slide-upload {
  margin-bottom: 20px;
  ::v-deep .el-upload--picture-card {
    width: 100%;
  }
}
</style>
